Download Methods

PNCC data sets are very large, with some of them comprising multiple terabytes. Distance matters a great deal when transferring such large quantities of data across geographical distances on a wide area network. The speed of network transfers has to be taken into account, as they can cause transfer times to vary by factors of 1000! Transfer rates of 100-400 Mbps are typical when transferring data from PNCC if your network connection is well-tuned.

To work around some of the inherent problems of transferring large quantities of data across long distances, PNCC recommends that you:

1. Ensure that machines at your institution are well-configured for long-distance data transfer.

2. Choose a file transfer tool that can perform well.

3. Test your transfers end-to-end from EMSL to troubleshoot any problems prior to taking data at PNCC.